Microscopic structure of a quantized vortex core in atomic Fermi gases

Journal Article · Tue Aug 15 00:00:00 EDT 2006 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.74.023621· OSTI ID:20853118

Machida, M ^[1]; Ohashi, Y ^[2]; Koyama, T ^[3]

---

1. CCSE, Japan Atomic Energy Agency, 6-9-3 Higashi-Ueno, Taito-ku Tokyo 110-0015 (Japan)
2. Faculty of Science and Technology, Keio University, 3-14-1, Hiyoshi, Kohoku-ku, Yokohama, Kanagawa 223-0061 (Japan)
3. CREST (JST), 4-1-8 Honcho, Kawaguchi, Saitama 332-0012 (Japan)

In order to understand what kind of information can be extracted from the vortex-core structure in superfluid fermion-atom gases we make a systematic study for the core structure of a singly quantized vortex in the range of broad Feshbach resonance, solving numerically the generalized Bogoliubov-de Gennes equation derived from the fermion-boson model. Numerical calculations reveal that the vortex core can be well characterized by three length scales from the spatial variation of the fermionic and bosonic gap functions. We also predict that the profile of matter depletion and the quasiparticle spectrum show distinctive differences between the BCS and Bose-Einstein Condensate regimes.

• OSTI ID: 20853118
• Journal Information: Physical Review. A, Vol. 74, Issue 2; Other Information: DOI: 10.1103/PhysRevA.74.023621; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
ATOMS
BOSE-EINSTEIN CONDENSATION
BOSONS
ENERGY SPECTRA
FERMI GAS
FERMIONS
GASES
QUASI PARTICLES
RESONANCE
SUPERFLUIDITY
VARIATIONS
VORTICES